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Schedule III Real Estate and Accumulated Depreciation (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 317,943      
Initial cost, Land [1] 267,946      
Initial cost, Buildings and Improvements [1] 954,624      
Cost Capitalized Subsequent to Acquisitions [2] 38,505      
Gross amount carried at end of period, Land [3],[4] 267,946      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 993,129      
Gross amount carried at end of period, Total 1,261,075 [3],[4] $ 1,255,127 $ 1,251,869 $ 1,298,836
Accumulated Depreciation (245,532) [5] $ (207,764) $ (170,269) $ (139,134)
Blossom Valley Plaza [Member] | Turlock, CA [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] 9,515      
Initial cost, Buildings and Improvements [1] 11,142      
Cost Capitalized Subsequent to Acquisitions [2] 684      
Gross amount carried at end of period, Land [3],[4] 9,515      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 11,826      
Gross amount carried at end of period, Total [3],[4] 21,341      
Accumulated Depreciation [5] $ (2,871)      
Date Constructed 1988      
Date Acquired 2015      
Blossom Valley Plaza [Member] | Turlock, CA [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Blossom Valley Plaza [Member] | Turlock, CA [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Branson Hills Plaza [Member] | Branson, MO [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 3,787      
Initial cost, Buildings and Improvements [1] 6,039      
Cost Capitalized Subsequent to Acquisitions [2] 174      
Gross amount carried at end of period, Land [3],[4] 3,787      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 6,213      
Gross amount carried at end of period, Total [3],[4] 10,000      
Accumulated Depreciation [5] $ (1,661)      
Date Constructed 2005      
Date Acquired 2014      
Branson Hills Plaza [Member] | Branson, MO [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Branson Hills Plaza [Member] | Branson, MO [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Coastal North Town Center [Member] | Myrtle Beach, SC [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 41,348      
Initial cost, Land [1] 13,725      
Initial cost, Buildings and Improvements [1] 49,673      
Cost Capitalized Subsequent to Acquisitions [2] (1,130)      
Gross amount carried at end of period, Land [3],[4] 13,725      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 48,543      
Gross amount carried at end of period, Total [3],[4] 62,268      
Accumulated Depreciation [5] $ (10,076)      
Date Constructed 2014      
Date Acquired 2016      
Coastal North Town Center [Member] | Myrtle Beach, SC [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Coastal North Town Center [Member] | Myrtle Beach, SC [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Coastal North Town Center Phase II [Member] | Myrtle Beach, SC [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 365      
Initial cost, Buildings and Improvements [1] 3,034      
Gross amount carried at end of period, Land [3],[4] 365      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 3,034      
Gross amount carried at end of period, Total [3],[4] 3,399      
Accumulated Depreciation [5] $ (490)      
Date Constructed 2016      
Date Acquired 2017      
Coastal North Town Center Phase II [Member] | Myrtle Beach, SC [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Coastal North Town Center Phase II [Member] | Myrtle Beach, SC [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Dixie Valley [Member] | Louisville, KY [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 6,798      
Initial cost, Land [1] 2,807      
Initial cost, Buildings and Improvements [1] 9,053      
Cost Capitalized Subsequent to Acquisitions [2] 1,238      
Gross amount carried at end of period, Land [3],[4] 2,807      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 10,291      
Gross amount carried at end of period, Total [3],[4] 13,098      
Accumulated Depreciation [5] $ (2,870)      
Date Constructed 1988      
Date Acquired 2014      
Dixie Valley [Member] | Louisville, KY [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Dixie Valley [Member] | Louisville, KY [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Dogwood Festival [Member] | Flowood, MO [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 4,500      
Initial cost, Buildings and Improvements [1] 41,865      
Cost Capitalized Subsequent to Acquisitions [2] 3,888      
Gross amount carried at end of period, Land [3],[4] 4,500      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 45,753      
Gross amount carried at end of period, Total [3],[4] 50,253      
Accumulated Depreciation [5] $ (12,607)      
Date Constructed 2002      
Date Acquired 2014      
Dogwood Festival [Member] | Flowood, MO [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 5 years      
Dogwood Festival [Member] | Flowood, MO [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Eastside Junction [Member] | Athens, AL [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 5,805      
Initial cost, Land [1] 2,411      
Initial cost, Buildings and Improvements [1] 8,393      
Cost Capitalized Subsequent to Acquisitions [2] 57      
Gross amount carried at end of period, Land [3],[4] 2,411      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 8,450      
Gross amount carried at end of period, Total [3],[4] 10,861      
Accumulated Depreciation [5] $ (2,224)      
Date Constructed 2008      
Date Acquired 2015      
Eastside Junction [Member] | Athens, AL [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Eastside Junction [Member] | Athens, AL [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Fairgrounds Crossing [Member] | Hot Springs, AR [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 6,069      
Initial cost, Buildings and Improvements [1] 22,637      
Cost Capitalized Subsequent to Acquisitions [2] 1,117      
Gross amount carried at end of period, Land [3],[4] 6,069      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 23,754      
Gross amount carried at end of period, Total [3],[4] 29,823      
Accumulated Depreciation [5] $ (5,831)      
Date Constructed 2008      
Date Acquired 2015      
Fairgrounds Crossing [Member] | Hot Springs, AR [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Fairgrounds Crossing [Member] | Hot Springs, AR [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Fox Point Plaza [Member] | Neenah, WI [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 3,518      
Initial cost, Buildings and Improvements [1] 12,681      
Cost Capitalized Subsequent to Acquisitions [2] 1,882      
Gross amount carried at end of period, Land [3],[4] 3,518      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 14,563      
Gross amount carried at end of period, Total [3],[4] 18,081      
Accumulated Depreciation [5] $ (3,847)      
Date Constructed 2008      
Date Acquired 2014      
Fox Point Plaza [Member] | Neenah, WI [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Fox Point Plaza [Member] | Neenah, WI [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Frisco Marketplace [Member] | Frisco, TX [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 6,618      
Initial cost, Buildings and Improvements [1] 3,315      
Gross amount carried at end of period, Land [3],[4] 6,618      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 3,315      
Gross amount carried at end of period, Total [3],[4] 9,933      
Accumulated Depreciation [5] $ (1,029)      
Date Constructed 2002      
Date Acquired 2015      
Frisco Marketplace [Member] | Frisco, TX [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Frisco Marketplace [Member] | Frisco, TX [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Green Tree Shopping Center [Member] | Katy, TX [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 13,100      
Initial cost, Land [1] 7,218      
Initial cost, Buildings and Improvements [1] 17,846      
Cost Capitalized Subsequent to Acquisitions [2] 824      
Gross amount carried at end of period, Land [3],[4] 7,218      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 18,670      
Gross amount carried at end of period, Total [3],[4] 25,888      
Accumulated Depreciation [5] $ (4,518)      
Date Constructed 1997      
Date Acquired 2015      
Green Tree Shopping Center [Member] | Katy, TX [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 5 years      
Green Tree Shopping Center [Member] | Katy, TX [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Harris Plaza [Member] | Layton, UT [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 6,500      
Initial cost, Buildings and Improvements [1] 19,403      
Cost Capitalized Subsequent to Acquisitions [2] 2,233      
Gross amount carried at end of period, Land [3],[4] 6,500      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 21,636      
Gross amount carried at end of period, Total [3],[4] 28,136      
Accumulated Depreciation [5] $ (6,376)      
Date Acquired 2014      
Harris Plaza [Member] | Layton, UT [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2001      
Depreciable Lives 15 years      
Harris Plaza [Member] | Layton, UT [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2008      
Depreciable Lives 30 years      
Harvest Square [Member] | Harvest, AL [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 2,186      
Initial cost, Buildings and Improvements [1] 9,330      
Cost Capitalized Subsequent to Acquisitions [2] 186      
Gross amount carried at end of period, Land [3],[4] 2,186      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 9,516      
Gross amount carried at end of period, Total [3],[4] 11,702      
Accumulated Depreciation [5] $ (2,660)      
Date Constructed 2008      
Date Acquired 2014      
Harvest Square [Member] | Harvest, AL [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Harvest Square [Member] | Harvest, AL [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Heritage Square [Member] | Conyers, AL [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 2,028      
Initial cost, Buildings and Improvements [1] 5,538      
Cost Capitalized Subsequent to Acquisitions [2] 364      
Gross amount carried at end of period, Land [3],[4] 2,028      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 5,902      
Gross amount carried at end of period, Total [3],[4] 7,930      
Accumulated Depreciation [5] $ (1,622)      
Date Constructed 2010      
Date Acquired 2014      
Heritage Square [Member] | Conyers, AL [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Heritage Square [Member] | Conyers, AL [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Kroger - Copps Grocery Store [Member] | Stevens Point, WI [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1],[3] $ 1,440      
Initial cost, Buildings and Improvements [1],[3] 11,799      
Gross amount carried at end of period, Land [3],[4] 1,440      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 11,799      
Gross amount carried at end of period, Total [3],[4] 13,239      
Accumulated Depreciation [3],[5] $ (3,042)      
Date Constructed [3] 2012      
Date Acquired [3] 2014      
Kroger - Copps Grocery Store [Member] | Stevens Point, WI [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives [3] 15 years      
Kroger - Copps Grocery Store [Member] | Stevens Point, WI [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives [3] 30 years      
Kroger - Pick n Save Center [Member] | West Bend, WI [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 3,150      
Initial cost, Buildings and Improvements [1] 14,283      
Cost Capitalized Subsequent to Acquisitions [2] 2,798      
Gross amount carried at end of period, Land [3],[4] 3,150      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 17,081      
Gross amount carried at end of period, Total [3],[4] 20,231      
Accumulated Depreciation [5] $ (4,400)      
Date Constructed 2011      
Date Acquired 2014      
Kroger - Pick n Save Center [Member] | West Bend, WI [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Kroger - Pick n Save Center [Member] | West Bend, WI [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Lakeside Crossing [Member] | Lynchburg, VA [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 1,460      
Initial cost, Buildings and Improvements [1] 16,999      
Cost Capitalized Subsequent to Acquisitions [2] 432      
Gross amount carried at end of period, Land [3],[4] 1,460      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 17,431      
Gross amount carried at end of period, Total [3],[4] 18,891      
Accumulated Depreciation [5] $ (4,865)      
Date Constructed 2013      
Date Acquired 2014      
Lakeside Crossing [Member] | Lynchburg, VA [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Lakeside Crossing [Member] | Lynchburg, VA [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Landing at Ocean Isle Beach [Member] | Ocean Isle, NC [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 3,053      
Initial cost, Buildings and Improvements [1] 7,081      
Cost Capitalized Subsequent to Acquisitions [2] 147      
Gross amount carried at end of period, Land [3],[4] 3,053      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 7,228      
Gross amount carried at end of period, Total [3],[4] 10,281      
Accumulated Depreciation [5] $ (2,122)      
Date Constructed 2009      
Date Acquired 2014      
Landing at Ocean Isle Beach [Member] | Ocean Isle, NC [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Landing at Ocean Isle Beach [Member] | Ocean Isle, NC [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Mansfield Pointe [Member] | Mansfield, TX [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 5,350      
Initial cost, Buildings and Improvements [1] 20,002      
Cost Capitalized Subsequent to Acquisitions [2] 796      
Gross amount carried at end of period, Land [3],[4] 5,350      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 20,798      
Gross amount carried at end of period, Total [3],[4] 26,148      
Accumulated Depreciation [5] $ (6,007)      
Date Constructed 2008      
Date Acquired 2014      
Mansfield Pointe [Member] | Mansfield, TX [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Mansfield Pointe [Member] | Mansfield, TX [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Marketplace at El Paseo [Member] | Fresno, CA [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 16,390      
Initial cost, Buildings and Improvements [1] 46,971      
Cost Capitalized Subsequent to Acquisitions [2] (479)      
Gross amount carried at end of period, Land [3],[4] 16,390      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 46,492      
Gross amount carried at end of period, Total [3],[4] 62,882      
Accumulated Depreciation [5] $ (10,446)      
Date Constructed 2014      
Date Acquired 2015      
Marketplace at El Paseo [Member] | Fresno, CA [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Marketplace at El Paseo [Member] | Fresno, CA [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Marketplace at Tech Center [Member] | Newport News, VA [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 36,089      
Initial cost, Land [1] 10,684      
Initial cost, Buildings and Improvements [1] 68,580      
Cost Capitalized Subsequent to Acquisitions [2] (72)      
Gross amount carried at end of period, Land [3],[4] 10,684      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 68,508      
Gross amount carried at end of period, Total [3],[4] 79,192      
Accumulated Depreciation [5] $ (14,547)      
Date Constructed 2015      
Date Acquired 2015      
Marketplace at Tech Center [Member] | Newport News, VA [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Marketplace at Tech Center [Member] | Newport News, VA [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
MidTowne Shopping Center [Member] | Little Rock, AR [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 8,810      
Initial cost, Buildings and Improvements [1] 29,699      
Cost Capitalized Subsequent to Acquisitions [2] 706      
Gross amount carried at end of period, Land [3],[4] 8,810      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 30,405      
Gross amount carried at end of period, Total [3],[4] 39,215      
Accumulated Depreciation [5] $ (8,798)      
Date Acquired 2014      
MidTowne Shopping Center [Member] | Little Rock, AR [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2005      
Depreciable Lives 5 years      
MidTowne Shopping Center [Member] | Little Rock, AR [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2008      
Depreciable Lives 30 years      
Milford Marketplace [Member] | Milford, CT [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 18,727      
Initial cost, Buildings and Improvements [1] 35,867      
Cost Capitalized Subsequent to Acquisitions [2] 1,125      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 36,992      
Gross amount carried at end of period, Total [3],[4] 36,992      
Accumulated Depreciation [5] $ (8,442)      
Date Constructed 2007      
Date Acquired 2015      
Milford Marketplace [Member] | Milford, CT [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Milford Marketplace [Member] | Milford, CT [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Newington Fair [Member] | Newington, CT [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 7,833      
Initial cost, Buildings and Improvements [1] 8,329      
Cost Capitalized Subsequent to Acquisitions [2] 562      
Gross amount carried at end of period, Land [3],[4] 7,833      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 8,891      
Gross amount carried at end of period, Total [3],[4] 16,724      
Accumulated Depreciation [5] $ (3,651)      
Date Acquired 2012      
Newington Fair [Member] | Newington, CT [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 1994      
Depreciable Lives 15 years      
Newington Fair [Member] | Newington, CT [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2009      
Depreciable Lives 30 years      
North Hills Square [Member] | Coral Springs, FL [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 4,800      
Initial cost, Buildings and Improvements [1] 5,493      
Cost Capitalized Subsequent to Acquisitions [2] 652      
Gross amount carried at end of period, Land [3],[4] 4,800      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 6,145      
Gross amount carried at end of period, Total [3],[4] 10,945      
Accumulated Depreciation [5] $ (1,704)      
Date Constructed 1997      
Date Acquired 2014      
North Hills Square [Member] | Coral Springs, FL [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
North Hills Square [Member] | Coral Springs, FL [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Oquirrh Mountain Marketplace [Member] | Jordan, UT [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 4,254      
Initial cost, Buildings and Improvements [1] 14,467      
Cost Capitalized Subsequent to Acquisitions [2] 177      
Gross amount carried at end of period, Land [3],[4] 4,254      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 14,644      
Gross amount carried at end of period, Total [3],[4] 18,898      
Accumulated Depreciation [5] $ (3,196)      
Date Acquired 2015      
Oquirrh Mountain Marketplace [Member] | Jordan, UT [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2014      
Depreciable Lives 15 years      
Oquirrh Mountain Marketplace [Member] | Jordan, UT [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2015      
Depreciable Lives 30 years      
Oquirrh Mountain Marketplace Phase II [Member] | Jordan, UT [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 1,403      
Initial cost, Buildings and Improvements [1] 3,727      
Cost Capitalized Subsequent to Acquisitions [2] (50)      
Gross amount carried at end of period, Land [3],[4] 1,403      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 3,677      
Gross amount carried at end of period, Total [3],[4] 5,080      
Accumulated Depreciation [5] $ (764)      
Date Acquired 2016      
Oquirrh Mountain Marketplace Phase II [Member] | Jordan, UT [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2014      
Depreciable Lives 15 years      
Oquirrh Mountain Marketplace Phase II [Member] | Jordan, UT [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2015      
Depreciable Lives 30 years      
Park Avenue Shopping Center [Member] | Little Rock, AR [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 5,500      
Initial cost, Buildings and Improvements [1] 16,365      
Cost Capitalized Subsequent to Acquisitions [2] 3,151      
Gross amount carried at end of period, Land [3],[4] 5,500      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 19,516      
Gross amount carried at end of period, Total [3],[4] 25,016      
Accumulated Depreciation [5] $ (5,463)      
Date Constructed 2012      
Date Acquired 2014      
Park Avenue Shopping Center [Member] | Little Rock, AR [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Park Avenue Shopping Center [Member] | Little Rock, AR [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Pentucket Shopping Center [Member] | Plaistow, NH [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 14,700      
Initial cost, Land [1] 5,993      
Initial cost, Buildings and Improvements [1] 11,251      
Cost Capitalized Subsequent to Acquisitions [2] 501      
Gross amount carried at end of period, Land [3],[4] 5,993      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 11,752      
Gross amount carried at end of period, Total [3],[4] 17,745      
Accumulated Depreciation [5] $ (2,228)      
Date Constructed 1986      
Date Acquired 2017      
Pentucket Shopping Center [Member] | Plaistow, NH [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Pentucket Shopping Center [Member] | Plaistow, NH [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Plaza at Prairie Ridge [Member] | Pleasant Prairie, WI [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 618      
Initial cost, Buildings and Improvements [1] 2,305      
Gross amount carried at end of period, Land [3],[4] 618      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 2,305      
Gross amount carried at end of period, Total [3],[4] 2,923      
Accumulated Depreciation [5] $ (564)      
Date Constructed 2008      
Date Acquired 2015      
Plaza at Prairie Ridge [Member] | Pleasant Prairie, WI [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Plaza at Prairie Ridge [Member] | Pleasant Prairie, WI [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Prattville Town Center [Member] | Prattville, AL [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 5,336      
Initial cost, Buildings and Improvements [1] 27,672      
Cost Capitalized Subsequent to Acquisitions [2] 194      
Gross amount carried at end of period, Land [3],[4] 5,336      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 27,866      
Gross amount carried at end of period, Total [3],[4] 33,202      
Accumulated Depreciation [5] $ (6,966)      
Date Constructed 2007      
Date Acquired 2015      
Prattville Town Center [Member] | Prattville, AL [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Prattville Town Center [Member] | Prattville, AL [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Regal Court [Member] | Shreveport, LA [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 26,000      
Initial cost, Land [1] 5,873      
Initial cost, Buildings and Improvements [1] 41,181      
Cost Capitalized Subsequent to Acquisitions [2] 2,097      
Gross amount carried at end of period, Land [3],[4] 5,873      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 43,278      
Gross amount carried at end of period, Total [3],[4] 49,151      
Accumulated Depreciation [5] $ (10,723)      
Date Constructed 2008      
Date Acquired 2015      
Regal Court [Member] | Shreveport, LA [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 5 years      
Regal Court [Member] | Shreveport, LA [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Settlers Ridge [Member] | Pittsburgh, PA [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 76,532      
Initial cost, Land [1] 25,961      
Initial cost, Buildings and Improvements [1] 98,157      
Cost Capitalized Subsequent to Acquisitions [2] 654      
Gross amount carried at end of period, Land [3],[4] 25,961      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 98,811      
Gross amount carried at end of period, Total [3],[4] 124,772      
Accumulated Depreciation [5] $ (23,213)      
Date Constructed 2011      
Date Acquired 2015      
Settlers Ridge [Member] | Pittsburgh, PA [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Settlers Ridge [Member] | Pittsburgh, PA [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Shoppes at Lake Park [Member] | West Valley City. UT [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 2,285      
Initial cost, Buildings and Improvements [1] 8,527      
Cost Capitalized Subsequent to Acquisitions [2] 90      
Gross amount carried at end of period, Land [3],[4] 2,285      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 8,617      
Gross amount carried at end of period, Total [3],[4] 10,902      
Accumulated Depreciation [5] $ (2,159)      
Date Constructed 2008      
Date Acquired 2015      
Shoppes at Lake Park [Member] | West Valley City. UT [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Shoppes at Lake Park [Member] | West Valley City. UT [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Shoppes at Market Pointe [Member] | Papillion, NE [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 13,700      
Initial cost, Land [1] 12,499      
Initial cost, Buildings and Improvements [1] 8,388      
Cost Capitalized Subsequent to Acquisitions [2] 998      
Gross amount carried at end of period, Land [3],[4] 12,499      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 9,386      
Gross amount carried at end of period, Total [3],[4] 21,885      
Accumulated Depreciation [5] $ (3,082)      
Date Acquired 2015      
Shoppes at Market Pointe [Member] | Papillion, NE [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2006      
Depreciable Lives 15 years      
Shoppes at Market Pointe [Member] | Papillion, NE [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2007      
Depreciable Lives 30 years      
Shoppes at Prairie Ridge [Member] | Pleasant Prairie, WI [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 7,521      
Initial cost, Buildings and Improvements [1] 22,468      
Cost Capitalized Subsequent to Acquisitions [2] 932      
Gross amount carried at end of period, Land [3],[4] 7,521      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 23,400      
Gross amount carried at end of period, Total [3],[4] 30,921      
Accumulated Depreciation [5] $ (5,940)      
Date Constructed 2009      
Date Acquired 2014      
Shoppes at Prairie Ridge [Member] | Pleasant Prairie, WI [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Shoppes at Prairie Ridge [Member] | Pleasant Prairie, WI [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
The Shoppes at Branson Hills [Member] | Branson, MO [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 4,418      
Initial cost, Buildings and Improvements [1] 37,229      
Cost Capitalized Subsequent to Acquisitions [2] 2,136      
Gross amount carried at end of period, Land [3],[4] 4,418      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 39,365      
Gross amount carried at end of period, Total [3],[4] 43,783      
Accumulated Depreciation [5] $ (9,773)      
Date Constructed 2005      
Date Acquired 2014      
The Shoppes at Branson Hills [Member] | Branson, MO [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
The Shoppes at Branson Hills [Member] | Branson, MO [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Shops at Hawk Ridge [Member] | St. Louis, MO [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 1,329      
Initial cost, Buildings and Improvements [1] 10,341      
Cost Capitalized Subsequent to Acquisitions [2] 285      
Gross amount carried at end of period, Land [3],[4] 1,329      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 10,626      
Gross amount carried at end of period, Total [3],[4] 11,955      
Accumulated Depreciation [5] $ (2,683)      
Date Constructed 2009      
Date Acquired 2015      
Shops at Hawk Ridge [Member] | St. Louis, MO [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 5 years      
Shops at Hawk Ridge [Member] | St. Louis, MO [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Village at Burlington Creek [Member] | Kansas City, MO [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 17,399      
Initial cost, Land [1] 10,789      
Initial cost, Buildings and Improvements [1] 19,385      
Cost Capitalized Subsequent to Acquisitions [2] 1,458      
Gross amount carried at end of period, Land [3],[4] 10,789      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 20,843      
Gross amount carried at end of period, Total [3],[4] 31,632      
Accumulated Depreciation [5] $ (5,004)      
Date Acquired 2015      
Village at Burlington Creek [Member] | Kansas City, MO [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2007      
Depreciable Lives 5 years      
Village at Burlington Creek [Member] | Kansas City, MO [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2015      
Depreciable Lives 30 years      
Walgreens Plaza [Member] | Jacksonville, NC [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 2,624      
Initial cost, Buildings and Improvements [1] 9,683      
Cost Capitalized Subsequent to Acquisitions [2] 410      
Gross amount carried at end of period, Land [3],[4] 2,624      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 10,093      
Gross amount carried at end of period, Total [3],[4] 12,717      
Accumulated Depreciation [5] $ (2,652)      
Date Constructed 2011      
Date Acquired 2015      
Walgreens Plaza [Member] | Jacksonville, NC [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Walgreens Plaza [Member] | Jacksonville, NC [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Wedgewood Commons [Member] | Olive Branch, MS [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 2,220      
Initial cost, Buildings and Improvements [1] 26,577      
Cost Capitalized Subsequent to Acquisitions [2] 2,186      
Gross amount carried at end of period, Land [3],[4] 2,220      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 28,763      
Gross amount carried at end of period, Total [3],[4] 30,983      
Accumulated Depreciation [5] $ (7,628)      
Date Acquired 2013      
Wedgewood Commons [Member] | Olive Branch, MS [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2009      
Depreciable Lives 5 years      
Wedgewood Commons [Member] | Olive Branch, MS [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2013      
Depreciable Lives 30 years      
White City [Member] | Shrewsbury, MA [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrance $ 47,745      
Initial cost, Land [1] 18,961      
Initial cost, Buildings and Improvements [1] 70,423      
Cost Capitalized Subsequent to Acquisitions [2] 3,190      
Gross amount carried at end of period, Land [3],[4] 18,961      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 73,613      
Gross amount carried at end of period, Total [3],[4] 92,574      
Accumulated Depreciation [5] $ (17,616)      
Date Constructed 2013      
Date Acquired 2015      
White City [Member] | Shrewsbury, MA [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
White City [Member] | Shrewsbury, MA [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Wilson Marketplace [Member] | Wilson, NC [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 11,155      
Initial cost, Buildings and Improvements [1] 27,498      
Cost Capitalized Subsequent to Acquisitions [2] 1,020      
Gross amount carried at end of period, Land [3],[4] 11,155      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 28,518      
Gross amount carried at end of period, Total [3],[4] 39,673      
Accumulated Depreciation [5] $ (5,190)      
Date Constructed 2007      
Date Acquired 2017      
Wilson Marketplace [Member] | Wilson, NC [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 15 years      
Wilson Marketplace [Member] | Wilson, NC [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Depreciable Lives 30 years      
Yorkville Marketplace [Member] | Yorkville, IL [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Initial cost, Land [1] $ 4,990      
Initial cost, Buildings and Improvements [1] 13,928      
Cost Capitalized Subsequent to Acquisitions [2] 892      
Gross amount carried at end of period, Land [3],[4] 4,990      
Gross amount carried at end of period, Buildings and Improvements [3],[4] 14,820      
Gross amount carried at end of period, Total [3],[4] 19,810      
Accumulated Depreciation [5] $ (3,982)      
Date Acquired 2015      
Yorkville Marketplace [Member] | Yorkville, IL [Member] | Minimum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2002      
Depreciable Lives 15 years      
Yorkville Marketplace [Member] | Yorkville, IL [Member] | Maximum [Member]        
Real Estate And Accumulated Depreciation [Line Items]        
Date Constructed 2007      
Depreciable Lives 30 years      
[1] The initial cost to the Company represents the original purchase price of the property.
[2] As applicable, some amounts include write-offs
[3] Reconciliation of real estate owned:
[4] The aggregate cost of real estate owned at December 31, 2021 for federal income tax purposes was $1,393,620.
[5] Reconciliation of accumulated depreciation: